baber/WOPTO huggingface dataset:
Patent GB-301179-A (GB)
Title: Improvements relating to umbrella covers
IPC: A45B25/20
Filed: 1928-07-09
Abstract: 301,179. Owen, G. M., and Owen, G. V. July 9, 1928. Covers.-A window in an umbrella is constructed by folding back the edges c of the umbrella and securing thereto a border D of braid by stitches E. In the pocket F so formed is placed the transparent substance B. The window is completed by securing the inner edges of the braid D with stitches. Windows with more than one compartment are divided by braid.
Patent GB-364158-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone system
IPC: H04M7/06
Filed: 1930-10-02
Abstract: 364,158. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. and WRIGHT, E. P. G., Columbia House, Aldwych, London. Oct. 2, 1930, No. 29490. [Class 40 (iv).] In a system wherein a plurality of routes are provided for setting up connections between two exchanges, all calls between the exchanges are immediately routed over a preselected group of junctions which are alone tested. The Figure shows a portion of the exchange equipment individual to an outgoing direct junction and that portion of the register sender which controls the sending of the translated code digits. The translated code is transmitted by a switch of the type described in Specification 354,405 wherein a number of wipers such as tm1 individual to particular exchanges is provided, and the arrangement of wiring of the bank contacts is such that the call is normally routed over one of the preferred junctions. If, however, all the preferred junctions are busy, relay A is energized over a series of contacts, e.g. h1, of relays H individual to each outgoing direct junction, to cause alteration of connection to the bank contacts of wiper tm1 at contacts a2 and acilitate translation of code to route the call via the alternative group without testing the preferred junctions. Relay A is operated only when the translating switch is at normal and its contacts ON are closed but when operated it remains locked up when the switch goes off normal. In a modification the operation of the call trunk busy relay depends only on the condition of the last choice junction in the preferred route. Only one set of contacts is necessarv to alter the translation if the switch is common to all the registers, but if the switch is individual to a register the contacts must be repeated or corresponding banks of the switches multipled. If access is not given to the selectors to search over every junction, a busy relay A is provided for each group of junctions that may be searched over, in which case, with a common translator the wiper and translation is repeated for those routes taking more than one busy relay. Code switches of the type using a plurality of wipers to effect a single translation may be employed.
Patent GB-298647-A (GB)
IPC: H03C1/22
Filed: 1928-10-12
Abstract: 298,647. Telefunken Ges. f³r Drahtlose Telegraphie. Oct. 14, 1927, [Convention date]. Thermionic modulating systems ; copying-telegraphs ; relaying systems.-In a highfrequency valve transmitter for copying and high-speed telegraphy in which an intermediate - frequency carrier modulated by the signals is suppressed at the transmitter, the modulated intermediatefrequency currents are applied to the grid of a modulating valve II, which is adjusted to rectify, and the anode circuit of the modulating valve is associated with a highfrequency transmitting valve I through a wave trap S which absorbs the intermediate-frequency carrier. Two modulating valves with their grid circuits in phase opposition may control the transmitting valve in parallel through a common wave trap (Fig. 2, not shown).
Patent GB-1117937-A (GB)
Title: Improvements in or relating to cleaning devices for coke oven frames and/or doors
IPC: C10B43/04
Filed: 1965-07-12
Abstract: 1,117,937. Cleaning coke ovens. SIMONCARVES Ltd. 12 July, 1965 [11 July, 1964], No. 29514/65. Heading F2N. In a device for cleaning coke oven doors and/or door frames a number of gratings 18, 19, 20, 21 and 22 acting as cleaning members are adapted to be brought into contact with the surfaces of a door 14 and a frame 13 to be cleaned and drive means are incorporated which oscillate the gratings in contact with the surfaces, the amplitude of the oscillations being at least equal to the pitch of the apertures in the gratings. The latter are mounted on a framework, consisting of channel members 28 and bars 31, 32 and 33, supported for vertical, sliding oscillation upon vertical rods 37 ... 40, the weight of the device being carried by springs and the device, including the drive means, being transportable on an overhead rail. The drive means comprises an eccentric driven by a motor and attached to the device by a connecting rod. The gratings are urged towards the surfaces to be cleaned by springs, pneumatic or hydraulic means; alternatively the gratings are rigidly attached to the framework.
Patent GB-818722-A (GB)
Title: Improvements in the manufacture of acrylonitrile
Filed: 1956-09-27
Abstract: A crude aqueous acrylonitrile solution containing acetaldehyde, obtained by reacting HCN and acetylene to form an acetylene-bearing gas and scrubbing said gas with water, is refined by distillation, characterized in that a free -HCN content in excess of that stoichiometrically equivalent to the acetaldehyde content is provided in the solution.  The acrylonitrile solution obtained from the scrubber may be subjected to steam stripping to concentrate it, a free-HCN content in excess of the acetaldehyde being provided in the concentrated acrylonitrile which is then distilled to produce a purified acrylonitrile product.  The amount of excess HCN is not critical and may be provided for in any suitable manner.  Preferably the HCN feed to the HCN-acetylene reactor is such as to ensure the required excess.  The excess HCN may also be provided by adding sufficient HCN directly prior to, following, or during the steam stripping operation.  In examples: (2) illustrates the distillation of a crude wet acrylonitrile containing sufficient free HCN to react with all of the free acetaldehyde; (1) is a comparative example; (3)-(12) illustrate experiments conducted on acrylonitrile solutions containing differing amounts of HCN and acetaldehyde to determine the stability against polymerization, the method utilized being the oxygen bomb induction period method described in Specification 600,708.
Patent GB-473110-A (GB)
Title: Improvements in and relating to brakes, particularly applicable to brakes for motor vehicles
IPC: F16D51/46
Filed: 1936-10-31
Abstract: 473,110. Drum brakes. MEHAFFY, R. H., and KLINGER, Ltd., R. Oct. 31, 1936, No. 29640. [Class 103 (i)] In an internal brake the movement of the brake shoe with the drum is arranged to increase its application by means of a lever, the ratio of which is Mu to X, where Mu is the coefficient of friction of the brake and X is selected as required to be less than unity. A lever 19 pivoted at 21 is adapted to be moved by movement of the shoe 16 with the drum and to exert applying force to the shoe by one of the links 24, the ratio of the arms of the lever 19 being Mu/X. In a modification, wedge surfaces on the shoe co-operate with a roller running on a flat surface. The brake-operating cam 28 engages the shoe 17 directly and operates the shoe 16 by means of a ring 22 and the lever 19. The ring 22 slides in plates 25. The cam 28 is operated through a strong spring 35 by the rod 32 which through a weak spring 39 operates a lever 41 pivoted at 41a and adapted to press the shoe 16 on to the drum by a pin 42. According to the Provisional Specification, each shoe may have a lever 19, the levers being operated by quadrants surrounding the wheel axle and actuated by a cam. The turning movement of the cam or back plate with the drum may be used to augment the braking. An hydraulic transmission with a pressure limiting spring is described.
Patent GB-447471-A (GB)
Title: Improvements in flexible guards for use in protecting articles such as electric leads
IPC: H04M1/15
Filed: 1934-10-16
Abstract: A flexible self-supporting helix long in relation to its cross-section is formed from a flat strip of cellulose derivative material to act as a flexible guard for use in protecting articles such as electric leads.  The guard may be made by winding a strip of cellulose derivative material round a mandrel to impart the desired helical form to the material, maintaining the material in a softened condition, either by heat or by the use of softening agents, so that it retains its form after release of the tension, and then hardening the material.  The guard may be used to prevent kinking of electric leads especially in connection with telephones or other portable instruments or to maintain two or more bare wires out of contact with one another.  It may be fitted round a lead connected at both ends. The flat strips which may be transparent, translucent or opaque may be cut from sheets, formed by extrusion or built up from a plurality of small filaments. They may contain suitable plasticizers such as diethyl or dibutyl phthalate, dibutyl tartrate, triacetin, mono-methyl xylene sulphonamide, tricresyl or triphenyl phosphate, paratoluene sulphonamide, di- or tri-ethylene glycol or triethanolamine, and effect materials such as pigments or dyes.  When cut from sheets, these may be worked to initiate movable or give a mottled design, or laminated sheets may be formed to give a variety of effects. For general use the strips may be \ba1/4\be--1\ba1/2\be inches wide and about \ba1/30\be inch thick.
Patent GB-464987-A (GB)
Title: Improvements in the supporting structures for belt conveyors
IPC: B65G39/10
Filed: 1935-10-28
Abstract: 464,987. Endless - belt conveyers. MITCHELL, F. G. Oct. 28, 1935, No. 29703. [Class 78 (i)] Idler or troughing roller brackets 19 of a belt conveyer are carried by straight transverse metal rails 17 of inverted T-section, being secured to the upstanding web of the rail by horizontal bolts 21 or other means. Two straight angle-rails may be arranged back to back to form the inverted T -section rail 17.
Patent GB-648068-A (GB)
Title: Improvements in or relating to vacuum flasks
IPC: A47J41/02
Filed: 1948-11-16
Abstract: 648,068. Vacuum-jacketed vessels. KING, Y. L., SZE, Y. C., and KING, S. L. Nov. 16, 1948, No. 29772. [Class 64(ii)] The flange 1 of the base of a vacuum flask casing is made discontinuous, e.g. by provision of notches 4 to permit free flow of air beneath the base 2 and to obviate the trapping of moisture draining from the casing interior..
Patent GB-520240-A (GB)
Title: Telegraphic systems
IPC: H04L27/06
Filed: 1938-10-14
Abstract: 520,240. Code telegraphy. STANDARD 'TELEPHONES & CABLES, Ltd. Oct. 14, 1938, No. 29837. Convention date, Nov. 13, 1937. [Class 40 (iii)] In an arrangement for receiving signals transmitted as interruptions of carrier current, the signals are rectified in a circuit having, in series, two circuits with different time constants, one longer than the maximum period during which carrier current is interrupted in signalling, and the other shorter than that of a signalling impulse, the voltage across the latter circuit being applied to the receiving apparatus, and the voltage across the former acting as a counter electromotive force to the voltage across the latter during interruptions of the carrier current, thereby reducing interference. 'The incoming voltage is applied to a transformer 1, Fig. 1, the output of which is passed through a rectifier 2 and two resistors r, r<SP>1</SP> in series. The ratio of r to r<SP>1</SP> is equal to the ratio of the intensity of the expected interference to that of the signals. Across the resistors r, r<SP>1</SP> are connected condensers c, c<SP>1</SP> respectively, such that the time constants are in agreement with the statement above. In the absence of interference, current through the resistor r drops to zero during a spacing signal and so - allows the potential of the grid of an amplifier V103 to rise to zero and transmits the signals to the receiver. If interference is present the .added effects of interference and carrier current produce a voltage across r<SP>1</SP> which persists during spacing signals and is of sufficient magnitude then to oppose the voltage produced across r by the interference alone. Thus during spacing conditions, no current. flows through r whether interference is present or not and under all circumstances the signals are faithfully passed to the receiver. To enable the condenser c<SP>1</SP> to be charged rapidly to its proper value as soon as the carrier frequency is restored the junction of rand r<SP>1</SP> is connected through a further rectifier 3 to a tapping on the transformer which will provide a potential equal to that at the said junction. In order that the lower limit of the bias of the grid of the output valve may be kept as nearly constant as possible despite variation in the level of the received carrier, the voltage supplied to the system is controlled by the current in the output valve, Fig. 3 (not shown). The Specification, as open to inspection under Sect. 91, also describes an arrangement in which resistance coupling is used to feed the resistances r, r<SP>1</SP>. This subject-matter does not appear in the Specification as accepted.
Patent GB-422078-A (GB)
Title: Improved anti-incrustator or fur collector for kettles, boilers, and other utensils
IPC: A47J36/42
Filed: 1933-10-27
Abstract: 422,078. Preventing incrustation. AXTEN, C. J., and LONG, A. T., Homeware Works, Hook Road, Hook, Surrey. Oct. 27, 1933, No. 29873. [Class 123 (i)] Incrustation in kettles and the like is prevented by a device comprising fibres, e.g. loofah a held together by washers band a pin c the end of which is then bent over. The part a may be formed from scraps of loofah stitched together.
Patent GB-831108-A (GB)
Title: Solvent dewaxing plant with unitary compressor
IPC: C10G73/06
Filed: 1958-09-18
Abstract: <PICT:0831108/III/1> A process for dewaxing a waxy petroleum hydrocarbon fraction wherein said fraction is mixed with a liquefied normally gaseous hydrocarbon under pressure, successive batches of the mixture are conducted to a pre-warmed chilling zone and chilled to dewaxing temperature by reducing the pressure in the chilling zone thus vaporizing a portion of the normally gaseous hydrocarbon, and separated waxes are removed from the chilled mixture by filtration through a continuous rotary filter, the filtrate being conducted to a filtrate tank and the wax cake built up on the filter loosened by blowback with a portion of the normally gaseous hydrocarbon is characterized by: (i) throttling down the vapours from the chiller to essentially the same pressure as the vapours from the filtrate tank; (ii) compressing said vapours in a multi-stage compressor, operating at a substantially constant low intake pressure to provide a high-pressure source of liquefied hydrocarbon for the chilling step; and (iii) obtaining compressed vapours from an interstage of the compressor for use as a blowback gas on the filter.  A dewaxing aid, e.g. 0.02 to 0.2% of wax substituted naphthalene may be added to the feed.  In Fig. 2 a mixture of waxy oil and liquid propane enters warm solution tank 120 through line 18 and regular batches are transferred by line 21 to chiller 122, which is warmed to 60 DEG  F. for each batch.  The mixture is chilled by bleeding off propane via line 127, knock-out drum 134 and tie 169 to the intake of multi-stage compressor 100.  When chilling temperature, e.g. - 10 DEG  F., is reached, the chilled mixture is forced via line 31 to filter feed tank 32 by means of propane vapours from interstage 101 of the compressor and line 124.  The chiller is then warmed for the next batch with hot propane vapours from line 126.  The low temperature of the mixture is maintained in the filter feed tank by bleeding off propane through line 133 and the mixture is fed through line 36 to filter 37 by gravity.  The filtrate passes to filtrate tank 41 whence the propane vapours return to the compressor via line 168, joining those from the chiller in line 127.  Wax is removed from the filter via line 148, blow-back gas for the filter being obtained from interstage 101 of the compressor via line 145.
Patent GB-688159-A (GB)
Title: Improvements in or relating to azo coupling components for photographic diazotype papers
IPC: G03C1/58
Filed: 1950-12-06
Abstract: 688,159. Photographic diazotype material. MASON & SONS, Ltd., E. N., and NORMAN, D. J. Dec. 5, 1951 [Dec. 6, 1950], No. 29896/50. Class 98 (ii). Photographic diazotype material contains as the azo coupling component 2 : 7-dihydroxynaphthalene - 3 : 6 - disulphonic acid or a salt thereof. 2 :7 Dihydroxynaphthalene may be sulphonated with concentrated sulphuric acid and the solution, after dilution with water and neutralization of the whole or a part of the excess sulphuric acid, is added directly to a solution of the diazo compound. The diazo compound may be a diazotized paminodialkylaniline, p-aminobenzylethylaniline, p - aminodiphenylamine, p - aminoethylhydroxyethylaniline, p - aminomorpholinoaniline, 1 - amino - 3 - methyl - 4 - ethylaminobenzene, 1 - amino - 2 - methyl - 4 - diethylaminobenzene, 1 - amino - 2 - alkyloxy- 4 - dialkylaminobenzene, or p - cyclohexylaminoaniline. In example 1, paper or cloth is coated with a solution prepared by adding an aqueous solution of sulphonated 2 7-dihydroxynaphthalene, partially neutralized with sodium carbonate, to an aqueous solution of diazo diphenylamine sulphate, citric acid, and thiourea. After exposure, the material is developed with ammonia vapour. In example 2, the procedure is similar, using as the diazo compound the zinc chloride double salt of pdiazodiethylaniline. In example 3, the procedure is again similar, using as the diazo compound the zinc chloride double salt of pdiazoethylhydroxyethylaniline or of p-diazodimethylanilin e.
Patent GB-741783-A (GB)
Title: Improvements in devices for lifting and tilting motor vehicles
IPC: B66F7/22
Filed: 1953-10-30
Abstract: 741,783. Garage lifts. NEUTEBOOM, J. J. Oct. 30, 1953 [Nov. 6, 1952], No. 30022/53. Class 78 (3). A winch actuated guided platform vehicle lift has means for tilting the vehicle laterally. Two beams 8 which are moved along four guide posts 2, 3 by a pair of winch drums 24, on a common shaft 41, and pairs of cables 36, are pivoted at 11 to a vehicle lifting platform provided with laterally adjustable tracks 15, 16 and end members 13. When it is desired to maintain the vehicle horizontal, members 13 are secured to beams 8 by catches (not shown), but when the vehicle is to be tilted, these catches are released and bars 31 or 31a pivoted to posts at 30, are secured to members 13 at 19 or 19a so that when the beams 8 are raised the free side of the platform is moved to the position shown. In a modification (Figs. 1, 2, not shown), the winch drums are located at the tops of the posts on one side of the apparatus. The Specification states that the vehicle can be secured to the platform by belts, threaded rods with overhanging bars and lock nuts, clamps, chains, rope loops or other means, and that the whole apparatus may be mounted on rollers.
Patent GB-1042669-A (GB)
Title: Dual axle bogie suspensions
IPC: B60G5/03
Filed: 1965-07-15
Abstract: 1,042,669. Tandem axle suspensions. GENERAL MOTORS CORPORATION. July 15, 1965 [Aug. 3, 1964], No. 30028/65. Heading B7D. In a tandem axle suspension comprising on each side of the vehicle a pair of vertically spaced laminated springs 34, 44 pivotally connected at each end to the axles 4, 6 and midway between the axles to a bracket 18 on the vehicle frame, a beam 32 pivotally connected to the frame coaxially with the upper spring 34 is formed with inclined surfaces 74, 76 which are progressively engaged by the spring to provide an increasing rate. Clevis members 54, 56, 58, 60 mounted in eyes at the ends of the springs 34, 44 are formed with threaded stubs 78 which are freely rotatable in threaded apertures 80 in brackets 62, 64, 66, 68 projecting from the axles 4, 6 so that the springs are not twisted by relative angular displacement of the axles.
Patent GB-1521542-A (GB)
Title: Method and apparatus for isotopic separation
IPC: B01D59/10
Filed: 1975-07-17
Abstract: 1521542 Isotope separation JERSEY NUCLEAR - AVCO ISOTOPES INC 17 July 1975 [15 Oct 1974] 30045/75 Heading B1L [Also in Division G6]  The separation of molecules containing atoms of different atomic weight by interaction with a body is assisted by subjecting the gas being separated to the action of electromagnetic radiation, for example a laser beam, which produces molecular vibration in the molecules containing one of the isotopes but not in the molecules containing the other isotopes. In a gas diffusion separation process the vibrating molecules are not retained so readily by the surfaces of the walls of the diffusion channels as those which are not vibrating. The laser radiation may have a frequency in the infra-red range and may be produced by a Pb-Se diode laser or by a CS 2  vapour laser. Fractions enriched in U235 may be obtained by the treatment of uranium hexafluoride.
Patent GB-653219-A (GB)
Title: Improvements in or relating to stone sieving and foliage removing apparatus for potato harvesting machines
IPC: B07B1/24
Filed: 1948-11-19
Abstract: 653,219. Potato harvester. NELSON, S. B. Nov. 19, 1948, No. 30080. Convention date, Nov. 22, 1947. [Class 6(iii)] A stone separating device for use with, or mounted on, a potato harvester comprises two rotatable drums 1, 3, both open at each end and spaced apart by members 4. The lifted crop is fed into one end of the inner drum 3 by means of an elevator 5 on the harvester. Potatoes and stones fall through holes 6 in the drum 3 and the foliage and large stones are fed to the delivery end of the drum 3 by means of a continuous spiral shaped flange 7. The outer drum 1 is covered with wire netting or lattice work through which falls the earth and small stones. The potatoes are carried by guide plates 8 to the delivery end of the drum and are deposited outside the drum to be sorted preferably by an air blast which separates the potatoes from the stones. Catch plates 9 may be provided for dealing with large potatoes and the drums may be inclined downwards towards the delivery end.
Patent GB-1510848-A (GB)
Title: Process for the production of saccarified starch products
IPC: C12N9/24
Filed: 1975-07-17
Abstract: 1510848 Maltose; saccharification of starch hydrolysates HAYASHIBARA SEIBUTSU KAGAKU KENKYUJO KK 17 July 1975 [30 Nov 1974] 30102/75 Heading C2S Saccharified starch products are prepared by subjecting a starch hydrolysate having a maltose content of at least 80 wt. per cent to the action of an alpha-amylase having a maltotriose-decomposing activity versus dextrinogenic activity ratio of 0À001 to 0À1 thereby increasing the maltose content of the hydrolysate. The amylase is preferably derived from a fungus of the genus Aspergillus, Rhizopus, Penicillium or Oospara.